Protocol to request
            
                Surface and intracellular staining
                
                
            
        
        
            
                Research article
            
            
                The transforming growth factor beta signaling pathway is critical for the formation of CD4 T follicular helper cells and isotype-switched antibody responses in the lung mucosa
                
            
            
            
                Heather D Marshall et al.
            
            
                DOI: 10.7554/eLife.04851